This is the THS Racing Traxxas Revo 3.3 High-Performance Tuned Pipe and Manifold Set. This awesome exhaust system is hard-anodized for durability, but the hard-anodizing also increases performance due to the affect it has on the aluminum. This is a great way to increase the power and performance of your racing Revo. This also works well with the OS 18TM engine on the Revo.

Got this pipe for my OS21tm Revo. I was running the Buku pipe before and just wanted to try something different. This is a great pipe and the performance is impressive. Seems to opened the top up over the Buku while maintaining the low end. It's a little quieter than the Buku, but some would prefer that. Great pipe for a great price!